Detection of aflatoxin B₁ on corn kernel surfaces using visible-near infrared spectroscopy

In this study, visible-near infrared spectroscopy over the spectral range of 400–2500 nm was utilized to detect surface contamination of corn kernels with aflatoxin B 1 . The artificially contaminated samples were prepared by dropping known amounts of aflatoxin B 1 standard dissolved in 50:50 ( v/ v) methanol/water solution, onto corn kernel surface to achieve different contamination levels of 10, 20, 50, 100, 500, and 1000 ppb. Both endosperm...